Mercurial > cpython-lru_cache-weakref
annotate Lib/lib-tk/tkSimpleDialog.py @ 39042:c02fa187e0f4 legacy-trunk
Part of SF patch #1484695. This removes dead code. The chksum was
already verified in .frombuf() on the lines above. If there was
a problem an exception is raised, so there was no way this condition
could have been true.
| author | Neal Norwitz <nnorwitz@gmail.com> |
|---|---|
| date | Mon, 10 Jul 2006 00:23:17 +0000 |
| parents | 22ded309648b |
| children | 0f135affabf2 89f2e8da0f0f |
| rev | line source |
|---|---|
| 5990 | 1 # |
| 2 # An Introduction to Tkinter | |
| 3 # tkSimpleDialog.py | |
| 4 # | |
| 5 # Copyright (c) 1997 by Fredrik Lundh | |
| 6 # | |
| 7 # fredrik@pythonware.com | |
| 8 # http://www.pythonware.com | |
| 9 # | |
| 10 | |
| 11 # -------------------------------------------------------------------- | |
| 12 # dialog base class | |
| 13 | |
| 11845 | 14 '''Dialog boxes |
| 15 | |
| 16 This module handles dialog boxes. It contains the following | |
| 17 public symbols: | |
| 18 | |
| 19 Dialog -- a base class for dialogs | |
| 20 | |
| 21 askinteger -- get an integer from the user | |
| 22 | |
| 23 askfloat -- get a float from the user | |
| 24 | |
| 25 askstring -- get a string from the user | |
| 26 ''' | |
| 27 | |
| 5990 | 28 from Tkinter import * |
| 29 import os | |
| 30 | |
| 31 class Dialog(Toplevel): | |
| 32 | |
| 11845 | 33 '''Class to open dialogs. |
| 34 | |
| 35 This class is intended as a base class for custom dialogs | |
| 36 ''' | |
| 37 | |
| 5990 | 38 def __init__(self, parent, title = None): |
| 39 | |
| 11845 | 40 '''Initialize a dialog. |
| 41 | |
| 42 Arguments: | |
| 43 | |
| 44 parent -- a parent window (the application window) | |
| 45 | |
| 46 title -- the dialog title | |
| 47 ''' | |
| 5990 | 48 Toplevel.__init__(self, parent) |
| 49 self.transient(parent) | |
| 50 | |
| 51 if title: | |
| 52 self.title(title) | |
| 53 | |
| 54 self.parent = parent | |
| 55 | |
| 56 self.result = None | |
| 57 | |
| 58 body = Frame(self) | |
| 59 self.initial_focus = self.body(body) | |
| 60 body.pack(padx=5, pady=5) | |
| 61 | |
| 62 self.buttonbox() | |
| 63 | |
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64 self.wait_visibility() # window needs to be visible for the grab |
| 5990 | 65 self.grab_set() |
| 66 | |
| 67 if not self.initial_focus: | |
| 68 self.initial_focus = self | |
| 69 | |
| 70 self.protocol("WM_DELETE_WINDOW", self.cancel) | |
| 71 | |
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72 if self.parent is not None: |
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73 self.geometry("+%d+%d" % (parent.winfo_rootx()+50, |
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74 parent.winfo_rooty()+50)) |
| 5990 | 75 |
| 76 self.initial_focus.focus_set() | |
| 77 | |
| 78 self.wait_window(self) | |
| 79 | |
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80 def destroy(self): |
| 11845 | 81 '''Destroy the window''' |
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82 self.initial_focus = None |
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83 Toplevel.destroy(self) |
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84 |
| 5990 | 85 # |
| 86 # construction hooks | |
| 87 | |
| 88 def body(self, master): | |
| 11845 | 89 '''create dialog body. |
| 5990 | 90 |
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91 return widget that should have initial focus. |
| 11845 | 92 This method should be overridden, and is called |
| 93 by the __init__ method. | |
| 94 ''' | |
| 5990 | 95 pass |
| 96 | |
| 97 def buttonbox(self): | |
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98 '''add standard button box. |
| 11845 | 99 |
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100 override if you do not want the standard buttons |
| 11845 | 101 ''' |
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102 |
| 5990 | 103 box = Frame(self) |
| 104 | |
| 105 w = Button(box, text="OK", width=10, command=self.ok, default=ACTIVE) | |
| 106 w.pack(side=LEFT, padx=5, pady=5) | |
| 107 w = Button(box, text="Cancel", width=10, command=self.cancel) | |
| 108 w.pack(side=LEFT, padx=5, pady=5) | |
| 109 | |
| 110 self.bind("<Return>", self.ok) | |
| 111 self.bind("<Escape>", self.cancel) | |
| 112 | |
| 113 box.pack() | |
| 114 | |
| 115 # | |
| 116 # standard button semantics | |
| 117 | |
| 118 def ok(self, event=None): | |
| 119 | |
| 120 if not self.validate(): | |
| 121 self.initial_focus.focus_set() # put focus back | |
| 122 return | |
| 123 | |
| 124 self.withdraw() | |
| 125 self.update_idletasks() | |
| 126 | |
| 127 self.apply() | |
| 128 | |
| 129 self.cancel() | |
| 130 | |
| 131 def cancel(self, event=None): | |
| 132 | |
| 133 # put focus back to the parent window | |
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134 if self.parent is not None: |
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135 self.parent.focus_set() |
| 5990 | 136 self.destroy() |
| 137 | |
| 138 # | |
| 139 # command hooks | |
| 140 | |
| 141 def validate(self): | |
| 11845 | 142 '''validate the data |
| 143 | |
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144 This method is called automatically to validate the data before the |
| 11845 | 145 dialog is destroyed. By default, it always validates OK. |
| 146 ''' | |
| 5990 | 147 |
| 148 return 1 # override | |
| 149 | |
| 150 def apply(self): | |
| 11845 | 151 '''process the data |
| 152 | |
| 153 This method is called automatically to process the data, *after* | |
| 154 the dialog is destroyed. By default, it does nothing. | |
| 155 ''' | |
| 5990 | 156 |
| 157 pass # override | |
| 158 | |
| 159 | |
| 160 # -------------------------------------------------------------------- | |
| 161 # convenience dialogues | |
| 162 | |
| 163 class _QueryDialog(Dialog): | |
| 164 | |
| 165 def __init__(self, title, prompt, | |
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166 initialvalue=None, |
| 5990 | 167 minvalue = None, maxvalue = None, |
| 168 parent = None): | |
| 169 | |
| 170 if not parent: | |
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171 import Tkinter |
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172 parent = Tkinter._default_root |
| 5990 | 173 |
| 174 self.prompt = prompt | |
| 175 self.minvalue = minvalue | |
| 176 self.maxvalue = maxvalue | |
| 177 | |
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178 self.initialvalue = initialvalue |
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179 |
| 5990 | 180 Dialog.__init__(self, parent, title) |
| 181 | |
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182 def destroy(self): |
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183 self.entry = None |
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184 Dialog.destroy(self) |
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185 |
| 5990 | 186 def body(self, master): |
| 187 | |
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188 w = Label(master, text=self.prompt, justify=LEFT) |
| 5990 | 189 w.grid(row=0, padx=5, sticky=W) |
| 190 | |
| 191 self.entry = Entry(master, name="entry") | |
| 192 self.entry.grid(row=1, padx=5, sticky=W+E) | |
| 193 | |
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194 if self.initialvalue: |
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195 self.entry.insert(0, self.initialvalue) |
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196 self.entry.select_range(0, END) |
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197 |
| 5990 | 198 return self.entry |
| 199 | |
| 200 def validate(self): | |
| 201 | |
| 202 import tkMessageBox | |
| 203 | |
| 204 try: | |
| 205 result = self.getresult() | |
| 206 except ValueError: | |
| 207 tkMessageBox.showwarning( | |
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208 "Illegal value", |
| 5990 | 209 self.errormessage + "\nPlease try again", |
| 210 parent = self | |
| 211 ) | |
| 212 return 0 | |
| 213 | |
| 214 if self.minvalue is not None and result < self.minvalue: | |
| 215 tkMessageBox.showwarning( | |
| 216 "Too small", | |
| 217 "The allowed minimum value is %s. " | |
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218 "Please try again." % self.minvalue, |
| 5990 | 219 parent = self |
| 220 ) | |
| 221 return 0 | |
| 222 | |
| 223 if self.maxvalue is not None and result > self.maxvalue: | |
| 224 tkMessageBox.showwarning( | |
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225 "Too large", |
| 5990 | 226 "The allowed maximum value is %s. " |
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227 "Please try again." % self.maxvalue, |
| 5990 | 228 parent = self |
| 229 ) | |
| 230 return 0 | |
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231 |
| 5990 | 232 self.result = result |
| 233 | |
| 234 return 1 | |
| 235 | |
| 236 | |
| 237 class _QueryInteger(_QueryDialog): | |
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238 errormessage = "Not an integer." |
| 5990 | 239 def getresult(self): |
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240 return int(self.entry.get()) |
| 5990 | 241 |
| 242 def askinteger(title, prompt, **kw): | |
| 11845 | 243 '''get an integer from the user |
| 244 | |
| 245 Arguments: | |
| 246 | |
| 247 title -- the dialog title | |
| 248 prompt -- the label text | |
| 249 **kw -- see SimpleDialog class | |
| 250 | |
| 251 Return value is an integer | |
| 252 ''' | |
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253 d = _QueryInteger(title, prompt, **kw) |
| 5990 | 254 return d.result |
| 255 | |
| 256 class _QueryFloat(_QueryDialog): | |
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257 errormessage = "Not a floating point value." |
| 5990 | 258 def getresult(self): |
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259 return float(self.entry.get()) |
| 5990 | 260 |
| 261 def askfloat(title, prompt, **kw): | |
| 11845 | 262 '''get a float from the user |
| 263 | |
| 264 Arguments: | |
| 265 | |
| 266 title -- the dialog title | |
| 267 prompt -- the label text | |
| 268 **kw -- see SimpleDialog class | |
| 269 | |
| 270 Return value is a float | |
| 271 ''' | |
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272 d = _QueryFloat(title, prompt, **kw) |
| 5990 | 273 return d.result |
| 274 | |
| 275 class _QueryString(_QueryDialog): | |
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276 def __init__(self, *args, **kw): |
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277 if kw.has_key("show"): |
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278 self.__show = kw["show"] |
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279 del kw["show"] |
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280 else: |
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281 self.__show = None |
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282 _QueryDialog.__init__(self, *args, **kw) |
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283 |
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284 def body(self, master): |
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285 entry = _QueryDialog.body(self, master) |
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286 if self.__show is not None: |
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287 entry.configure(show=self.__show) |
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288 return entry |
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289 |
| 5990 | 290 def getresult(self): |
| 291 return self.entry.get() | |
| 292 | |
| 293 def askstring(title, prompt, **kw): | |
| 11845 | 294 '''get a string from the user |
| 295 | |
| 296 Arguments: | |
| 297 | |
| 298 title -- the dialog title | |
| 299 prompt -- the label text | |
| 300 **kw -- see SimpleDialog class | |
| 301 | |
| 302 Return value is a string | |
| 303 ''' | |
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304 d = _QueryString(title, prompt, **kw) |
| 5990 | 305 return d.result |
| 306 | |
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307 if __name__ == "__main__": |
| 5990 | 308 |
| 309 root = Tk() | |
| 310 root.update() | |
| 311 | |
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312 print askinteger("Spam", "Egg count", initialvalue=12*12) |
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313 print askfloat("Spam", "Egg weight\n(in tons)", minvalue=1, maxvalue=100) |
| 5990 | 314 print askstring("Spam", "Egg label") |